import Vue from 'vue'
import VueRouter from 'vue-router'
// import Login from '../components/Login.vue'
// import Home from '../components/Home.vue'
// import Welcome from '../components/Welcome.vue'
const Login = () => import(/* webpackChunkName: "login_home_welcome" */ '../components/Login.vue')
const Home = () => import(/* webpackChunkName: "login_home_welcome" */ '../components/Home.vue')
const Welcome = () => import(/* webpackChunkName: "login_home_welcome" */ '../components/Welcome.vue')
// import Users from '../components/Users.vue'
const Users = () => import(/* webpackChunkName: "users" */ '../components/Users.vue')

Vue.use(VueRouter)

const routes = [{
    path: '/',
    redirect: '/login'
  },
  {
    path: '/login',
    component: Login
  },
  {
    path: '/home',
    component: Home,
    children: [{
        path: '/',
        component: Welcome
      },
      {
        path: '/users',
        component: Users
      }
    ]
  }
]

const router = new VueRouter({
  routes
})
//导航守卫
router.beforeEach((to ,from,next)=>{
  if(to.path==='/login') return next()
  const tokenStr=window.sessionStorage.getItem('token')
  if(!tokenStr) return next('/login')
  next()
})

export default router
